我遵循了关于天鹅座和猎户座的官方文档。所有通用启用程序都已正确部署,其日志文件中没有错误。但是奇怪的事情发生了,猎户座从来没有通知天鹅座。
为了测试这个机制,我按照官方文档中提供的 Car 实体示例进行了操作。
我的实体创建 bash 脚本:
(curl $1:1026/v1/updateContext -s -S --header 'Content-Type: application/json' --header 'Accept: application/json' -d @- | python -mjson.tool) <<EOF
{
"contextElements": [
{
"type": "Car",
"isPattern": "false",
"id": "Car1",
"attributes": [
{
"name": "speed",
"type": "integer",
"value": "75"
},
{
"name": "fuel",
"type": "float",
"value": "12.5"
}
]
}
],
"updateAction": "APPEND"
}
EOF
我的实体订阅 bash 脚本:
(curl $1:1026/v1/subscribeContext -s -S --header 'Content-Type: application/json' --header 'Accept: application/json' --header 'Fiware-Service: vehicles' --header 'Fiware-ServicePath: /4wheels' -d @- | python -mjson.tool) <<EOF
{
"entities": [
{
"type": "Car",
"isPattern": "false",
"id": "Car1"
}
],
"attributes": [
"speed",
"oil_level"
],
"reference": "http://$2:5050/notify",
"duration": "P1M",
"notifyConditions": [
{
"type": "ONCHANGE",
"condValues": [
"speed"
]
}
],
"throttling": "PT1S"
}
EOF
我的实体更新 bash 脚本:
(curl $1:1026/v1/updateContext -s -S --header 'Content-Type: application/json' --header 'Accept: application/json' -d @- | python -mjson.tool) <<EOF
{
"contextElements": [
{
"type": "Car",
"isPattern": "false",
"id": "Car1",
"attributes": [
{
"name": "speed",
"type": "integer",
"value": $2
}
]
}
],
"updateAction": "UPDATE"
}
EOF
注意:Orion 会响应所有请求。
执行完这些脚本后,cygnus 必须接收来自 orion 的上报信息并将其保存在数据库中,但没有任何反应。在 /var/log/cygnus/cygnus.log 文件或 /var/log/contextBroker/contextBroker.log 文件中都不会报告有关 orion 通知的任何信息。
注意:如果我使用官方文档中提供的 notify.sh 脚本,Cygnus 运行良好并将所有数据保存在数据库中。
注意:我在其他问题中阅读了有关开放端口的问题,但这些不适用于我的。
编辑 1
在我订阅猎户座后,回复是:
{
"subscribeResponse": {
"duration": "P1M",
"subscriptionId": "563e12b4f4d8334d599753e0",
"throttling": "PT1S"
}
}
当我更新实体时,猎户座返回它:
{
"contextResponses": [
{
"contextElement": {
"attributes": [
{
"name": "speed",
"type": "integer",
"value": ""
}
],
"id": "Car1",
"isPattern": "false",
"type": "Car"
},
"statusCode": {
"code": "200",
"reasonPhrase": "OK"
}
}
]
}
要从 orion 获取实体,我使用了以下脚本:
(curl $1:1026/v1/queryContext -s -S --header 'Content-Type: application/json' \
--header 'Accept: application/json' -d @- | python -mjson.tool) <<EOF
{
"entities": [
{
"type": "Car",
"isPattern": "false",
"id": "Car1"
}
]
}
EOF
回复:
{
"contextResponses": [
{
"contextElement": {
"attributes": [
{
"name": "fuel",
"type": "float",
"value": "12.5"
},
{
"name": "speed",
"type": "integer",
"value": "123"
}
],
"id": "Car1",
"isPattern": "false",
"type": "Car"
},
"statusCode": {
"code": "200",
"reasonPhrase": "OK"
}
}
]
}
注意速度值已成功更新。